多波束声参数在海底热液区底质分类中的应用——以东太平洋海隆“宝石山”热液区为例

详细信息

收稿日期: 2012-02-07

SEAFLOOR CLASSIFICATION IN HYDROTHERMAL FIELD USING MULTI-BEAM SONAR

Received Date: 07 February 2012

摘要: 多波束声纳底质分类可以高效且全覆盖地认识海底底质类型及其分布特征。应用Simrad EM120多波束声纳对东太平洋海隆附近的"宝石山"热液区进行底质分类,一方面可以研究多波束声参数在深水热液区进行底质分类的效果,挖掘多波束声纳在海底底质分类方面的应用潜力;另一方面,通过研究热液区的底质取样、摄像以及多波束声纳资料,建立综合分析热液区底质的模式,获得热液区的底质类型及其分布特征。通过提取与底质属性相关的声纳回波反向散射强度数据,形成"宝石山"热液区的声纳图像,并结合该区域的取样与海底摄像资料,综合分析该热液区的底质类型及其分布特征,结果表明,沉积物在该热液区的喷口西侧广泛分布,在喷口周围主要是基岩与砾石的混杂底质。
- 多波束声纳 /
- 海底热液区 /
- 底质分类 /
- 海底声纳图像
Abstract: Multi-beam sonar is an efficient mean for seabed classification. It can provide information on sediment types and their distribution pattern. We studied the seabed classification for a hydrothermal field using Simrad EM120 multi-beam sonar data. The sonar backscatter image shows that soft sediments are mainly distributed in the southwest, and the mixture of rock and gravels to the east of the vent.
- multi-beam sonar /
- submarine hydrothermal /
- seafloor classification /
- seabed backscatter image